American Society of Civil Engineers

Green Infrastructure Approaches to Control of Combined Sewer Overflows

by Rajesh Rajan, (CDM, 2 Penn Center, 1500 JFK Blvd. #624, Philadelphia, PA 19102), Marc Cammarata, P.E., (Philadelphia Water Department, Philadelphia, PA), James T. Smullen, Ph.D., P.E., (CDM, Raritan Plaza I, Raritan Center, Edison, NJ 08818), Dwayne Myers, P.E., (CDM, 2 Penn Center, 1500 JFK Blvd. #624, Philadelphia, PA 19102), Gary D. Martens, (CDM, 2 Penn Center, 1500 JFK Blvd. #624, Philadelphia, PA 19102), and Shannon K. Reynolds, (CDM, 2 Penn Center, 1500 JFK Blvd. #624, Philadelphia, PA 19102)
Section: Watershed Retrofit with LID, pp. 1-11, (doi:

     Access full text
     Purchase Subscription
     Permissions for Reuse  

Document type: Conference Proceeding Paper
Part of: Low Impact Development for Urban Ecosystem and Habitat Protection
Abstract: The Philadelphia Water Department is committed to a balanced land-water-infrastructure approach to achieve watershed management and combined sewer overflow (CSO) control goals. This method includes infrastructure-based approaches where appropriate, but also includes a range of land-based stormwater management techniques and physical rehabilitation of aquatic habitats. The goal is to restore the water environment in the City of Philadelphia and the surrounding areas, while achieving regulatory compliance in a cost-effective manner. This paper explains the hydrologic and hydraulic modeling used to design the approach and quantifies potential benefits of stormwater management and green infrastructure in one of the three highly urbanized drainage districts in Philadelphia. The results indicate that a significant reduction in stormwater volume can be achieved by requiring stormwater controls for redevelopment and through implementation on public lands.

ASCE Subject Headings:
Combined sewers
Stormwater management